What is specifically in tobbacco that makes people throw up when they swallow it?

Question

I know you can swallow saliva from nicotine salt pouches, but why does tobbacco saliva make you vomit?

In: 4

Answer 1

All the chemicals in tobacco leaves are there to keep caterpillars from eating the leaf. Nicotine, while a powerful insecticide, isn’t the only chemical. Hydrogen cyanide and formaldehyde are also present, and your stomach is sensitive to these chemicals because they are also poisonous to humans.